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. 2022 Jan 11;12:706478. doi: 10.3389/fneur.2021.706478

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Copyright © 2022 Li, He, Yang, Guo, Weng, Luo, Gong, Cui, Ding and Guo.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Distribution of COVID-19 severe events by CVD history [(A): non-CVD subset and (B) CVD subset]. Bar plots show the counts of all hospitalized patients. Patients were stratified into age groups by decade. Counts (top of bars) show the percentage of patients who had severe events in respective age groups. The majority of severe events happened in patients over age sixty years. Among patients over sixty, the proportions of having severe events were much higher in CVD subset. Age distribution of patients with CVD history was right-skewed compared to the non-CVD subset.